136404635186986 has 16 divisors (see below), whose sum is σ = 212015447107200. Its totient is φ = 65772973925568.

The previous prime is 136404635186927. The next prime is 136404635186987. The reversal of 136404635186986 is 689681536404631.

It is not an unprimeable number, because it can be changed into a prime (136404635186987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10038603391 + ... + 10038616978.

It is an arithmetic number, because the mean of its divisors is an integer number (13250965444200).

Almost surely, 2^{136404635186986} is an apocalyptic number.

136404635186986 is a deficient number, since it is larger than the sum of its proper divisors (75610811920214).

136404635186986 is a wasteful number, since it uses less digits than its factorization.

136404635186986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20077220493.

The product of its (nonzero) digits is 537477120, while the sum is 70.

The spelling of 136404635186986 in words is "one hundred thirty-six trillion, four hundred four billion, six hundred thirty-five million, one hundred eighty-six thousand, nine hundred eighty-six".